Lamp-socket.



' T. O'DONNELL.

LAMP SOCKET.

APPLICATION FILED MAY 24. 19 |5.

' gwucntoz Thomas CD02??? provide apparatus of Other objects and-advantagesiof the in-j ve'ntion will be apparent. during the course of the following description;

LAME-@UCKET.

To all 1117mm it may concern:

- Be it'known that I, Tiioims ODoNN-ELL, a citizen of "the United States, residing at Ironwood, in the county of Gogebic and State of Michigan, have invented certain new and useful Improvements in Lainp sockets, of which the following is a specification.

My invention relates .to improvements in electrical cluster lampsocketsr An important object of the invention is to the above mentioned character, formed of and simple parts which may be readily separated and assem A- iiurther object of the'inycn'tion is to provide means of -the above mentioned character,.which' areattractive 53116; neat in appearance.

In the accompanying drawings forming a. part of this specification and in which like numerals are employed to designate like parts throughoutthe same, Figure}. is a central longitudinal sectional view through a,

socket embodying my invention, Fig. 2 is a horizontal. sectional view taken on l1ne-2-2 of Fig. 1, Fig. 3 is a' similar view taken online 3-3 of 1", Fig. ":i:- is a similar view taken on line 1--4 of Fig. 1, and Fig 5 is a perspective view of conducting elements.

In the drawings, wherein for the purpose I of illustration is :shown apreferred embodiment of my invention, the numeral 10 designates a metallic casing, having anupper detachable can 11 provided with an opening, 11. The lower end of the casing 1O is iiarecl and decreases in diameterdownwardly and has a cap 12, detachably connected therewith by any suitable means. I

Arranged. within the casing 10 is a main insulating'memberor support 13, formed oi wood, fiber, porcelain, or any other suitable material. Arranged upon the top of the main insulating support 13 is an upper auniliary insulating support 14, disposed in the cap 11'. Ehe upper end of the main insulating support 13 and the lower end of the auxiliary insulating support 14: are provided with a recess or chamber 15, within which is or anged a pivoted contact switch element 16, adapted to engage and disengage a stationary contact switch element or spring con-1 T he movable contact element 16 is rigidly mounted upon a metallic rod or rocln Specification of Letters Patent,

support 13' is a lower aiuxiliary insulatir Application filed may a l, 1915. "Serial No. 30,213.

shaft 18, j ournaled through the ends of a me. tallic bracket 19, arranged in the lower por tion oi the chamber 15'. The roclnshai t 18 T extends through openings QO-and projects 8X- c0 teriorly. of the casing 10, and carries an ii sulating key or knob 21,, as shown. The spring contact 17 is secured to the upper auxiliary insulating support llby a. bolt or the like.

The auxiliary insulating support 1 i fast to the upper end of the main insu' support 13 by a screw 23 or the like, ha.

r: [electrical contact with the contact element 17, as shown at 2%. T re main insulating support 13 1S provided upon one side with a recess or chamber within which are arrangedstationary contacts and 2?. The

stationery contact 2'? has a. screw-threaded opening for receiving the lower end oi? the-7;) screw 23. The contact 27 has a binding post 28jfor engagement with a 29 and the contact 26 has a binding post 30 for engagement with a Wire 31. The wires 2-9 and 31, have connection with the opposite pole of the source or current and are arranged in a groove 32, and pass out through the open 'ing 11.

Arranged beneath the main insulatirq support 00, held in place by a bolt 34, pass ing centrally therethrough and having screw-threaded engagement with the bracket 19. lhe upper end of the auxiliary support is provided with an annular groove receiving an insulating ring 36 and a metallic conducting Bill? or ring 37. The me- "tallic ring 37 has screw-threaded engage ment with av bolt-3 8, engaging the contact element 26, as shown. .Arranged beneath the annular groove 35 is a central recess 39.

within which is arranged a. metallic conducting element .40, preferably in the form of a spider, which is apertured for receiving the bolt and has electrical contact therewith. The cap 12 is provided with two or more sleeves ll, (only one beingshown), holding insulating rings 42. Arranged within the insulating rings .12 is a screw-threaded mo tallic sleeve 43, electrically connected by 1053 means of bolt or bolts 44 with the conduct- 5 ins; ring 37. This metallic'sleeve #13 is adapt ed for engagement with a screw-threaded socket 45 of an electric lamp 1-6. The opposite terminal of this electriclamp contacts with the head of a bolt 48, passing through the insulating support 32 and having electrical contact with the conducting element 40, as shown.

The operation of the apparatus is as follows When the switch Qlis turned whereby contact 16 has electrical contact with the contact element 17, a circuit is closed to cause the lamp or lamps to glow. In this closed circuit current flows from one pole of the source of current through wire 29, contactsorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described the invention, I claim: v

1. In apparatus of the character described, the combination with a main insulating support provided in its upper end with a chamber, of a bracket arranged in the chamber, a rock-shaft journaled through the bracket, a contact element carried by the rock-shaft, a co-acting contact element arranged in the 3 chamber near the ,first named contact element and secured to the insulating support,-

means for connecting one pole of a source of current with the co-acting contact element, an auxiliary insulating support secured to the opposite end of the main insulating support, a plurality of conducting elements arranged between the main insulating support and the auxiliary insulating support and insulated from each other, a bolt connecting the bracket with one conducting element, means connecting the other conducting element with the opposite pole of the source of current, and contact elements carried by the auxiliary insulating support and electrically connected with the conducting elements and adapted for contacting with the terminals of an electric lamp, substantially as described.

2. In apparatus of the character described,

the combination with a main insulating support provided in its upper end with a chamber, ofa bearing arranged in the chamber, a rock-shaft journaled through the bearing. a contact element carried bythe rock-shaft, a relatively stationary contact element arranged within the chamber near the first named contact element, means for connecting the relatively stationary contact element messes with one pole of a source of current, an auxiliary insulating support arranged upon the lower end of the main insulating support, a bolt passing longitudinally through the auxiliary insulating support and the main insulating support to secure them together and engaging the bearing, a plurality of conducting elements arranged between the "main insulating support and the auxiliary insulating support with one conducting element engaging the bolt, means connecting the other conducting element with the opposite pole of the source of current, and 'c'ontact'elenjpntshaving electrical connection with the c nducting elements andcarried by the auxiliary insulating support for contacting with the terminals of an electric lamp, substantially asdescribed.

3. In apparatus of the character described, a main insulating support, an auxiliary insulating support disposed at one end of the main insulating support, a bolt passing 1ongitudinally through the insulating supports to bind them togethena plurality 'of conducting members arranged between the insulating support and insulated from each other with one conducting member engaging the bolt, means connecting the bolt with one pole of the source of current, means c0nnect-' ing" the opposite conducting member with one pole of the source of current, and con-' tact elements carried by the auxiliary insulating support and electrically connectedwith the conducting elements and adaptedto contact with the terminals of anelectric bulb.

4. In apparatus of the character described, an insulating support provided upon one .side with a chamber, switch means carried by one end of the insulatingsupport and embodying a plurality of contact elements, a bindingspost arranged within the chamber and having electrical connection with one contact element, a plurality of conducting members carried by the other end of the insulating support, a second binding post arranged within the chamber and electrically connected with one conducting element, means electrically, connecting the other conducting element with the other contact element, and contacts carried by the, insulating support and electrically connected with the conducting elements and adapted to contact with the terminals of an electric lamp, substantially, as described.

In testimony whereof I afiix my signature in presence of two witnesses.

THOMAS ODONNELL. Witnesses SoLoMoN W. PATEK, ELIZABETH CLARA vODONNELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. 0. 

